/*!

 @Title: Layui
 @Description：经典模块化前端框架
 @Site: www.layui.com
 @Author: 贤心
 @License：MIT

 */

; !function (win) {

    "use strict";

    var Lay = function () {
        this.v = '1.0.9_rls'; //版本号
    };

    Lay.fn = Lay.prototype;

    var doc = document, config = Lay.fn.cache = {},

        //获取layui所在目录
        getPath = function () {
            var js = doc.scripts, jsPath = js[js.length - 1].src;
            return jsPath.substring(0, jsPath.lastIndexOf('/') + 1);
        }(),

        //异常提示
        error = function (msg) {
            win.console && console.error && console.error('Layui hint: ' + msg);
        },

        isOpera = typeof opera !== 'undefined' && opera.toString() === '[object Opera]',

        //内置模块
        modules = {
            layer: 'modules/layer' //弹层
            , laydate: 'modules/laydate' //日期
            , laypage: 'modules/laypage' //分页
            , laytpl: 'modules/laytpl' //模板引擎
            , layim: 'modules/layim' //web通讯
            , layedit: 'modules/layedit' //富文本编辑器
            , form: 'modules/form' //表单集
            , upload: 'modules/upload' //上传
            , tree: 'modules/tree' //树结构
            , table: 'modules/table' //富表格
            , element: 'modules/element' //常用元素操作
            , util: 'modules/util' //工具块
            , flow: 'modules/flow' //流加载
            , carousel: 'modules/carousel' //轮播
            , code: 'modules/code' //代码修饰器
            , jquery: 'modules/jquery' //DOM库（第三方）

            , mobile: 'modules/mobile' //移动大模块 | 若当前为开发目录，则为移动模块入口，否则为移动模块集合
            , 'layui.all': 'dest/layui.all' //PC模块合并版
        };

    config.modules = {}; //记录模块物理路径
    config.status = {}; //记录模块加载状态
    config.timeout = 10; //符合规范的模块请求最长等待秒数
    config.event = {}; //记录模块自定义事件

    //定义模块
    Lay.fn.define = function (deps, callback) {
        var that = this
            , type = typeof deps === 'function'
            , mods = function () {
                typeof callback === 'function' && callback(function (app, exports) {
                    layui[app] = exports;
                    config.status[app] = true;
                });
                return this;
            };

        type && (
            callback = deps,
            deps = []
        );

        if (layui['layui.all'] || (!layui['layui.all'] && layui['layui.mobile'])) {
            return mods.call(that);
        }

        that.use(deps, mods);
        return that;
    };

    //使用特定模块
    Lay.fn.use = function (apps, callback, exports) {
        var that = this, dir = config.dir = config.dir ? config.dir : getPath;
        var head = doc.getElementsByTagName('head')[0];

        apps = typeof apps === 'string' ? [apps] : apps;

        //如果页面已经存在jQuery1.7+库且所定义的模块依赖jQuery，则不加载内部jquery模块
        if (window.jQuery && jQuery.fn.on) {
            that.each(apps, function (index, item) {
                if (item === 'jquery') {
                    apps.splice(index, 1);
                }
            });
            layui.jquery = jQuery;
        }

        var item = apps[0], timeout = 0;
        exports = exports || [];

        //静态资源host
        config.host = config.host || (dir.match(/\/\/([\s\S]+?)\//) || ['//' + location.host + '/'])[0];

        if (apps.length === 0
            || (layui['layui.all'] && modules[item])
            || (!layui['layui.all'] && layui['layui.mobile'] && modules[item])
        ) {
            return onCallback(), that;
        }

        //加载完毕
        function onScriptLoad(e, url) {
            var readyRegExp = navigator.platform === 'PLaySTATION 3' ? /^complete$/ : /^(complete|loaded)$/
            if (e.type === 'load' || (readyRegExp.test((e.currentTarget || e.srcElement).readyState))) {
                config.modules[item] = url;
                head.removeChild(node);
                (function poll() {
                    if (++timeout > config.timeout * 1000 / 4) {
                        return error(item + ' is not a valid module');
                    };
                    config.status[item] ? onCallback() : setTimeout(poll, 4);
                }());
            }
        }

        //加载模块
        var node = doc.createElement('script'), url = (
            modules[item] ? (dir + 'lay/') : (config.base || '')
        ) + (that.modules[item] || item) + '.js';
        node.async = true;
        node.charset = 'utf-8';
        node.src = url + function () {
            var version = config.version === true
                ? (config.v || (new Date()).getTime())
                : (config.version || '');
            return version ? ('?v=' + version) : '';
        }();

        //首次加载
        if (!config.modules[item]) {
            head.appendChild(node);
            if (node.attachEvent && !(node.attachEvent.toString && node.attachEvent.toString().indexOf('[native code') < 0) && !isOpera) {
                node.attachEvent('onreadystatechange', function (e) {
                    onScriptLoad(e, url);
                });
            } else {
                node.addEventListener('load', function (e) {
                    onScriptLoad(e, url);
                }, false);
            }
        } else {
            (function poll() {
                if (++timeout > config.timeout * 1000 / 4) {
                    return error(item + ' is not a valid module');
                };
                (typeof config.modules[item] === 'string' && config.status[item])
                    ? onCallback()
                    : setTimeout(poll, 4);
            }());
        }

        config.modules[item] = url;

        //回调
        function onCallback() {
            exports.push(layui[item]);
            apps.length > 1 ?
                that.use(apps.slice(1), callback, exports)
                : (typeof callback === 'function' && callback.apply(layui, exports));
        }

        return that;

    };

    //获取节点的style属性值
    Lay.fn.getStyle = function (node, name) {
        var style = node.currentStyle ? node.currentStyle : win.getComputedStyle(node, null);
        return style[style.getPropertyValue ? 'getPropertyValue' : 'getAttribute'](name);
    };

    //css外部加载器
    Lay.fn.link = function (href, fn, cssname) {
        var that = this, link = doc.createElement('link');
        var head = doc.getElementsByTagName('head')[0];
        if (typeof fn === 'string') cssname = fn;
        var app = (cssname || href).replace(/\.|\//g, '');
        var id = link.id = 'layuicss-' + app, timeout = 0;

        link.rel = 'stylesheet';
        link.href = href + (config.debug ? '?v=' + new Date().getTime() : '');
        link.media = 'all';

        if (!doc.getElementById(id)) {
            head.appendChild(link);
        }

        if (typeof fn !== 'function') return;

        //轮询css是否加载完毕
        (function poll() {
            if (++timeout > config.timeout * 1000 / 100) {
                return error(href + ' timeout');
            };
            parseInt(that.getStyle(doc.getElementById(id), 'width')) === 1989 ? function () {
                fn();
            }() : setTimeout(poll, 100);
        }());
    };

    //css内部加载器
    Lay.fn.addcss = function (firename, fn, cssname) {
        layui.link(config.dir + 'css/' + firename, fn, cssname);
    };

    //图片预加载
    Lay.fn.img = function (url, callback, error) {
        var img = new Image();
        img.src = url;
        if (img.complete) {
            return callback(img);
        }
        img.onload = function () {
            img.onload = null;
            callback(img);
        };
        img.onerror = function (e) {
            img.onerror = null;
            error(e);
        };
    };

    //全局配置
    Lay.fn.config = function (options) {
        options = options || {};
        for (var key in options) {
            config[key] = options[key];
        }
        return this;
    };

    //记录全部模块
    Lay.fn.modules = function () {
        var clone = {};
        for (var o in modules) {
            clone[o] = modules[o];
        }
        return clone;
    }();

    //拓展模块
    Lay.fn.extend = function (options) {
        var that = this;

        //验证模块是否被占用
        options = options || {};
        for (var o in options) {
            if (that[o] || that.modules[o]) {
                error('\u6A21\u5757\u540D ' + o + ' \u5DF2\u88AB\u5360\u7528');
            } else {
                that.modules[o] = options[o];
            }
        }

        return that;
    };

    //路由
    Lay.fn.router = function (hash) {
        var hashs = (hash || location.hash).replace(/^#/, '').split('/') || [];
        var item, param = {
            dir: []
        };
        for (var i = 0; i < hashs.length; i++) {
            item = hashs[i].split('=');
            /^\w+=/.test(hashs[i]) ? function () {
                if (item[0] !== 'dir') {
                    param[item[0]] = item[1];
                }
            }() : param.dir.push(hashs[i]);
            item = null;
        }
        return param;
    };

    //本地存储
    Lay.fn.data = function (table, settings) {
        table = table || 'layui';

        if (!win.JSON || !win.JSON.parse) return;

        //如果settings为null，则删除表
        if (settings === null) {
            return delete localStorage[table];
        }

        settings = typeof settings === 'object'
            ? settings
            : { key: settings };

        try {
            var data = JSON.parse(localStorage[table]);
        } catch (e) {
            var data = {};
        }

        if (settings.value) data[settings.key] = settings.value;
        if (settings.remove) delete data[settings.key];
        localStorage[table] = JSON.stringify(data);

        return settings.key ? data[settings.key] : data;
    };

    //设备信息
    Lay.fn.device = function (key) {
        var agent = navigator.userAgent.toLowerCase();

        //获取版本号
        var getVersion = function (label) {
            var exp = new RegExp(label + '/([^\\s\\_\\-]+)');
            label = (agent.match(exp) || [])[1];
            return label || false;
        };

        var result = {
            os: function () { //底层操作系统
                if (/windows/.test(agent)) {
                    return 'windows';
                } else if (/linux/.test(agent)) {
                    return 'linux';
                } else if (/iphone|ipod|ipad|ios/.test(agent)) {
                    return 'ios';
                }
            }()
            , ie: function () { //ie版本
                return (!!win.ActiveXObject || "ActiveXObject" in win) ? (
                    (agent.match(/msie\s(\d+)/) || [])[1] || '11' //由于ie11并没有msie的标识
                ) : false;
            }()
            , weixin: getVersion('micromessenger')  //是否微信
        };

        //任意的key
        if (key && !result[key]) {
            result[key] = getVersion(key);
        }

        //移动设备
        result.android = /android/.test(agent);
        result.ios = result.os === 'ios';

        return result;
    };

    //提示
    Lay.fn.hint = function () {
        return {
            error: error
        }
    };

    //遍历
    Lay.fn.each = function (obj, fn) {
        var that = this, key;
        if (typeof fn !== 'function') return that;
        obj = obj || [];
        if (obj.constructor === Object) {
            for (key in obj) {
                if (fn.call(obj[key], key, obj[key])) break;
            }
        } else {
            for (key = 0; key < obj.length; key++) {
                if (fn.call(obj[key], key, obj[key])) break;
            }
        }
        return that;
    };

    //阻止事件冒泡
    Lay.fn.stope = function (e) {
        e = e || win.event;
        e.stopPropagation ? e.stopPropagation() : e.cancelBubble = true;
    };

    //自定义模块事件
    Lay.fn.onevent = function (modName, events, callback) {
        if (typeof modName !== 'string'
            || typeof callback !== 'function') return this;
        config.event[modName + '.' + events] = [callback];

        //不再对多次事件监听做支持
        /*
        config.event[modName + '.' + events] 
          ? config.event[modName + '.' + events].push(callback) 
        : config.event[modName + '.' + events] = [callback];
        */

        return this;
    };

    //执行自定义模块事件
    Lay.fn.event = function (modName, events, params) {
        var that = this, result = null, filter = events.match(/\(.*\)$/) || []; //提取事件过滤器
        var set = (events = modName + '.' + events).replace(filter, ''); //获取事件本体名
        var callback = function (_, item) {
            var res = item && item.call(that, params);
            res === false && result === null && (result = false);
        };
        layui.each(config.event[set], callback);
        filter[0] && layui.each(config.event[events], callback); //执行过滤器中的事件
        return result;
    };

    win.layui = new Lay();

}(window);
